<template>
	<view>
		<view class="uni-header">
			<view class="uni-group">
				<view class="uni-title"></view>
				<view class="uni-sub-title"></view>
				<el-button class="uni-button" type="success"  size="mini" @click="navigateTo('./add')">新增</el-button>
				<el-button class="uni-button" type="default" size="mini" v-if="false" :disabled="!selectedIndexs.length" @click="delTable">批量删除</el-button>
			</view>
			<view class="uni-group">
				<input class="uni-search" type="text" v-model="query" @confirm="search" placeholder="请输入搜索内容" />
				<button class="uni-button" type="default" size="mini" @click="search">搜索</button>
			</view>
		</view>
		<view class="uni-container">
			<unicloud-db
				ref="udb"
				collection="message"
				field="title,body,published_at,updated_at,created_at"
				:where="where"
				page-data="replace"
				:orderby="orderby"
				:getcount="true"
				:page-size="options.pageSize"
				:page-current="options.pageCurrent"
				v-slot:default="{ data, pagination, loading, error, options }"
				:options="options"
			>
				<uni-table :loading="loading" :emptyText="error.message || '没有更多数据'" border stripe type="selection" @selection-change="selectionChange">
					<uni-tr>
						<uni-th align="center">标题</uni-th>
						<!-- <uni-th align="center">body</uni-th> -->
						<uni-th align="center">发布时间</uni-th>
						<!-- <uni-th align="center">updated_at</uni-th>
						<uni-th align="center">created_at</uni-th> -->
						<uni-th width="204" align="center">操作</uni-th>
					</uni-tr>
					<uni-tr v-for="(item, index) in data" :key="index">
						<uni-td align="center">{{ item.title }}</uni-td>
						<!-- <uni-td align="center">{{ item.body }}</uni-td> -->
						<uni-td align="center"><uni-dateformat :date="item.published_at" :threshold="[0, 0]" /></uni-td>
						<!-- <uni-td align="center"><uni-dateformat :date="item.updated_at" :threshold="[0, 0]" /></uni-td>
						<uni-td align="center"><uni-dateformat :date="item.created_at" :threshold="[0, 0]" /></uni-td> -->
						<uni-td align="center">
							<view class="uni-group">
								<button @click="navigateTo('./edit?id=' + item._id, false)" class="uni-button" size="mini" type="primary">修改</button>
								<button @click="confirmDelete(item._id)" class="uni-button" size="mini" type="warn">删除</button>
							</view>
						</uni-td>
					</uni-tr>
				</uni-table>
				<view class="uni-pagination-box">
						<uni-pagination show-icon :page-size="pagination.size" v-model="pagination.current" :total="pagination.count"
						 @change="onPageChanged" />
				</view>
			</unicloud-db>
		</view>
	</view>
</template>

<script>
import { enumConverter } from '../../js_sdk/validator/message.js';
import { v4 as uuidv4,v1 as uuidv1 } from 'uuid';
const db = uniCloud.database();
// 表查询配置
const dbOrderBy = ''; // 排序字段
const dbSearchFields = ['title','content']; // 模糊搜索字段，支持模糊搜索的字段列表
// 分页配置
const pageSize = 20;
const pageCurrent = 1;

export default {
	data() {
		return {
			query: '',
			where: '',
			orderby: dbOrderBy,
			selectedIndexs: [],
			options: {
				pageSize,
				pageCurrent,
				...enumConverter
			},
			imageStyles: {
				width: 64,
				height: 64
			}
		};
	},
	created() {
	},
	methods: {
		getWhere() {
			const query = this.query.trim();
			if (!query) {
				return '';
			}
			const queryRe = new RegExp(query, 'i');
			return dbSearchFields.map(name => queryRe + '.test(' + name + ')').join(' || ');
		},
		search() {
			const newWhere = this.getWhere();
			const isSameWhere = newWhere === this.where;
			this.where = newWhere;
			if (isSameWhere) {
				// 相同条件时，手动强制刷新
				this.loadData();
			}
		},
		loadData(clear = true) {
			this.$refs.udb.loadData({
				clear
			});
		},
		onPageChanged(e) {
			this.$refs.udb.loadData({
				current: e.current
			});
		},
		navigateTo(url, clear) {
			// clear 表示刷新列表时是否清除页码，true 表示刷新并回到列表第 1 页，默认为 true
			uni.navigateTo({
				url,
				events: {
					refreshData: () => {
						this.loadData(clear);
					}
				}
			});
		},
		// 多选处理
		selectedItems() {
			var dataList = this.$refs.udb.dataList;
			return this.selectedIndexs.map(i => dataList[i]._id);
		},
		// 批量删除
		delTable() {
			this.$refs.udb.remove(this.selectedItems());
		},
		// 多选
		selectionChange(e) {
			this.selectedIndexs = e.detail.index;
		},
		confirmDelete(id) {
			this.$refs.udb.remove(id);
		}
	}
};
</script>

